Folding knife



FIG. 1 is a perspective view of a folding knife, with the blade closed, showing my new design.

FIG. 2 is a perspective view thereof, showing the blade in an open position.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a left side elevational view thereof.

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a right side elevational view thereof.

Stippling and shading lines shown in the drawings are intended to represent the approximate three-dimensional contour of the design, and are not intended to indicate surface decoration. Features depicted in broken lines form no part of the claimed design. 

The ornamental design for a folding knife, substantially as shown and described. 